A failure of autodiscovery during vCenter Single Sign-On installation on a machine with a Windows operating system can require you to manually add Active Directory domains.

Problem

vCenter Single Sign-On installation can fail to see Active Domains if autodiscovery fails.

Cause

Autodiscovery failure occurs for several reasons. Some causes are configuration errors with DNS and reverse lookup, trust issues, and certificate problems.

Solution

1

Verify that the network prerequisites are met as described in vSphere Installation and Setup.

2

Verify that the DNS configuration is correct.

View the logs at Single_Sign_On_Server\utils\logs\discover-is.log and imsTrace.log, or at a command line type Single_Sign_On_Server\utils\ssocli configure-riat -a discover-is and follow the prompts. If log messages include an error similar to

WARNING: Discovered address ‘hostname/ip' does not
map to the same host in reverse lookup.
Host: ‘another_hostname/same ip